Less than three blocks east of Main Street on a moderate slope, its current compact campus opened 86 years ago in 1939, with wings added in 1968[10][11] and 1991.

[18] A summer asbestos removal project was initiated in 2014 and extended into the school year due to delays.

An attempt to fund a new campus on the northeast edge of the city (east of Mountain View Park; 46°44′38″N 116°58′08″W / 46.744°N 116.969°W / 46.744; -116.969) was defeated by voters 20 years ago in 2005.

[21] Twenty seven years earlier in 1978, the state education department's supervisor of support services completed a study of the campus and recommended that the site be sold and a new high school built elsewhere.

[22] In the oldest part of Moscow, the MHS campus became the location of an archeological dig by the university's department of sociology and anthropology in autumn 2019.

[23] Moscow's athletic teams compete in IHSAA Class 4A, the second-highest in the state, in the Inland Empire League (4A).

[49] Due to limited space on its 3.9-acre (1.6 ha) campus, the varsity athletic facilities are located approximately a mile (1.6 km) northeast at Bear Field (and Bear Den gym), adjacent to Moscow Middle School and the school district headquarters (46°44′20″N 116°58′55″W / 46.739°N 116.982°W / 46.739; -116.982).

In 1976[50] and 1979, Moscow played its home football games across town at the Kibbie Dome on the University of Idaho campus,[51] and again in 1996, when the running track at Bear Field was being replaced.

[57] A longtime member of the Inland Empire League of north Idaho, MHS currently competes with Lakeland and Sandpoint in the IEL's 4A division.